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Methanol to olefin (MTO) reaction system

A methanol-to-olefins and reaction system technology, applied in the direction of producing hydrocarbons from oxygen-containing organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problems of poor heat exchange effect, easy coking of gas and methanol heat exchangers, etc., to achieve The effect of saving energy consumption, reducing the risk of coking, and shortening the reaction time

Active Publication Date: 2018-08-17
CHNA ENERGY INVESTMENT CORP LTD +2
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a methanol-to-olefins reaction system to solve the problem that the product gas and the methanol heat exchanger are easy to coke in the existing methanol-to-olefins reaction system, resulting in poor heat exchange effect

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  • Methanol to olefin (MTO) reaction system
  • Methanol to olefin (MTO) reaction system

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] As described in the background art, in the existing methanol-to-olefins reaction device, the product gas and methanol heat exchanger is prone to coking, which leads to poor heat exchange effect. In order to solve the above technical problems, the invention provides a reaction system for methanol to olefins, such as figure 1 As shown, it includes a methanol-to-olefins reaction device 10 and a gas-solid separation device 20 , and the methanol-to-olefins reaction device 10 includes an olefin product outlet 121 . The gas-solid separation device 20 is arranged inside the methanol-to-olefins reaction device 10 , and the olefin product outlet 121 communicates with the inlet end of the gas-soli...

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Abstract

The invention provides a methanol to olefin (MTO) system. The MTO reaction system comprises an MTO reactor and a gas-solid separator. The gas-solid separator is provided with an olefin outlet and is arranged in the MTO reactor. The olefin outlet is communicated with the inlet end of the gas-solid separator. The MTO reactor and the gas-solid separator form a heat exchanging structure, which is usedto cool the separated olefin gas from the gas-solid separator. Methanol gas can absorb the heat of high temperature olefin gas in the olefin product system in the gas-solid separator; the heat exchanging between the olefin gas and the MTO reactor is realized; the temperature of olefin gas is reduced, the coking of heat exchangers in subsequent flow paths is inhibited, and the heat exchanging effect is improved. Furthermore, methanol is heated by the heat of olefin gas, and the selectivity of MTO reactions is increased.

Description

technical field [0001] The invention relates to the field of methanol-to-olefins, in particular to a methanol-to-olefins reaction system. Background technique [0002] The methanol-to-olefins technology (MTO) mainly includes the DMTO process technology of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, the SMTO process technology of Sinopec Group, and the MTO technology of UOP Corporation of the United States. All three technologies have been industrialized in China. [0003] In the DMTO process, the temperature of the product gas out of the reactor is relatively high (above 450°C), and the hydrocarbons in the product gas will undergo coking reactions and side reactions. Therefore, when the above-mentioned high-temperature product gas passes through the product gas-methanol heat exchanger, it will coke, which will lead to a decrease in the heat transfer coefficient and poor heat transfer effect of the product gas-methanol heat exchanger (vertical heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02B01J8/00C07C1/20C07C11/02
CPCB01J8/0055B01J8/02B01J2208/00327C07C1/20C07C11/02
Inventor 杜善明吴国祥高文刚刘义刘广厦
Owner CHNA ENERGY INVESTMENT CORP LTD
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